Bicycle lock



Aug. 4, 1953 PAULSQN 2,647,390

BICYCLE LOCK Filed March 28, 1950 IN VEN TOR.

Pazz demz, IZ. W'-

Patented Aug. 4, 1953 UNITED STATES PATENT OFFICE BICYCLE LocK Ernest Paulson, Chicago, Ill. Application Mar-ch28, 1950, Serial No. 152,431

The present invention relates to bicycle locks and has for its main object the provision of a bicycle lock of the type which may be rigidly affixed to a bicycle mud guard, and which maybe provided with a retractable bolt shiftable between the wheel spokes in a transverse relation for the purpose of rendering a bicycle wheel inoperative.

Another object of the present invention is the provision in a bicycle lock of the type indicated of an annular casing broken at a portion of its periphery for providing a space for shifting thereinto a bolt or for retracting the same therefrom.

A still further object of the present invention others that will appear as the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawing and pointed out'in the appended claims.

In the drawing forming a part of this application, and in which like designating characters refer to corresponding parts throughout the several views: I t

Fig. 1 is a face elevatlonal view of the present lock, in an operative position with a bicycle wheel;

Fig. 2 is an enlarged face elevational view of the lock while in an inoperative position with the cover plate removed therefrom, the view having been taken on line 22 of Fig. 4; r

Fig. 3 is a similar view with the lock in an operative position;

Fig. 4 is a top elevational view of the lock; and

- 3Claims. (0111x427) Fig. 5 is a transverse crosssectional view through the lock, taken on line 5-5 of Fig. 2.

Referring in detail to the present drawing there is shown therein a lock which includes an arcuate casing I 0, which on transverse crosssection is substantially semi-annular, as is clearly seen in Fig. 5. The ends of said casing ID are spaced for defining recess ll. Receivable within said casing I0 is arcuate bolt I2 for shifting movement therewithin. Rigidly positioned within one end of said casing I0 is pin l3, to which one end of coil spring I4 is afiixed. The adjacent end of said bolt 12 is provided with a reduced lug I5, to which the opposite end of said coil spring I4 is affixed. Extending from a point of the periphery of said bolt l2, substantially centrally thereof,

is knob l6, which extends through recess I! made,

at the outer portion of said casing l0, and along its rim.

Integrally formed with said casing l0, and outwardly extending therefrom substantially from its central portion, is look casing l8, within which lock bolt I9 is positioned for sliding movement to or away from said bolt l2. Coil spring 20 positioned within said casing 18 normally bears against said bolt [Surging the same into an extended operative position. Lock mechanism 2|, not shown in detail in the drawing, operable by key 22', receivable within a key hole made in casing l8, actuates said lock bolt I9 for bringing the same into its inoperative position, shown in Fig. 2, against the tension of coil spring 20.

A fiat cover plate 22, of the contour corresponding to the contour of the bicycle lock, including casings l0 and I8, is provided, for covering said casings l0 and 8' and for. maintaining bolts l2 and IS in position. Said casing), along its inner and outer rims is provided with a plurailty of bulges 23, extending outwardly of said casing ID for effecting strengthening bases for rivet pins 24 from which the same project. Said rivet'pins 24 are extended through like bulges 25 made in said plate 22, and outwardly of said plate 22' the ends of said rivet pins 24 are formed into rivet heads 26 for maintaining said plate 22 in a rigid relative position with said casing l0.

, Cover plate 22, along the inner margin of its periphery, and substantially opposite of lock casing l 8, is provided with anintegrally formed mud guard engaging plate 21, laterally extending from said .coverplate 22. Said plate 21 is provided with a slot 28 through which rivet 29 is passed. Said rivet '29 is also extended through mud guard 30 of a bicycle wheel, whereby the lock assembly is maintained rigid with relation to the bicycle wheel and in a transverse relation therewith.

To position the bicycle look upon a bicycle wheel, the bicycle tire shoe 3| and the wheel rim 32 are passed through recess H, with the tire preferably in a deflated condition, and at a point free from the overhanging mud guard 30. 'I'hereupon the lock assembly is shifted over mud guard 30, and thereupon riveted thereto by means of rivet 29, recess H being sufiiciently wide for permitting passage therethrough of the deflated bicycle tire and wheel rim 32. In the operative position of the lock with relation to the bicycle wheel, the former will remain in a transverse relation with the latter, with bolt l2 shittable being and comes in contact with pin [3. When this takes place, the opposite inner end of bolt l2 has passed lock bolt 10, and the latter springs inwardly of casing III, in the path of bolt "I2,

barring the retraction of the latter, notwithstanding the pull exerted thereon by coil'spring 14, as is seen in Fig. 3. In that operative position of bolt 12 the same remains in the path of spokes 33 as seen in Fig. l, preventing the rotation of the bicycle wheel, as was hereinabove described. Upon withdrawal of key 22' from lock casing is, lock bolt I9, due to" the tension of spring 20 thereon, will remain in its operative position shown in Fig. 3.

When it is desired to render the bicycle lock inoperative for withdrawal'of bolt 2' fromrecess H, key 22' is inserted into the keyhole in look casing I8, and upon turning of the key lock mechanism 2| is actuated for shifting lock bolt 19 into its inoperative position, against the tension of spring 20,. for moving said lock bolt ID from the'path of. bolt l2 and from its engagement therewith. 'Once said lock bolt 19 has been shifted into its inoperative position, shown in Fig. 2, bolt 12 automatically and immediately shifts back due to the tension thereon by spring l4, knob I6 coming in contact with the body portion of casing l0, adjacent the end of recess I1, is prevented from further backward shifting. From the hereinabove description it will be seen that the length of bolt I2 is predetermined. The length thereof equals the distance between pin 13 and lock bolt 19, measured on the side of the bicycle lock at which knob 15 is located.

While there is described herein preferred embodiments of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed. What I claim as new is:

1. A bicycle lock comprising an open faced arcuate casing having its ends in a spacedrelation, an arcuate bolt shift'able within said casing, a coil spring attached by one of its ends to one end of said'casing and by the'other end to the adjacent end of said bolt, said spring normally urging said bolt into a retracted position, said casing being provided with a longitudinal recess, a knob affixed to said bolt and extending through said recess, on manual pulling of said knob said bolt being capable of shifting against the action of said spring into an extended position, in that latter position said bolt bridging the spaced ends of said casing. a spring actuable lock bolt entering said casing in the path of said bolt for maintaining the same in an extended position, means for retracting said lock bolt for permitting shifting ofsaid bolt into its retracted position, a plate rigidly afiixed to said casing for covering the open face of the latter, and a bicycle mud guard engaging plate integrally formed with and extending at right angle from said last named plate, said mud guard engaging plate being provided with a slot for receiving therethrough a fastener for engaging the mud guard with said mud guard engaging plate.

2. A bicycle lock comprising an open faced arcuate casing having its ends in a spaced relation, an arcuate bolt within said casing, means for normally maintaining said bolt in a retracted position, means for shifting said bolt out of said casingfor bridging the ends of said casing, a cover plate rigidly affixed to said casing for covering the open face of the latter, and a bicycle mud guard engaging plate integrally formed with and extending at right angle from said cover plate, said mud guard engaging plate being provided with a slot for receiving therethrough a fastener for engaging the mud guard with said mud guard engaging plate.

3. A bicycle lock comprising an open faced arcuate casing having its ends in spaced relation, an arcuate bolt slidably mounted within said casing, means for normally maintaining said bolt in a retracted position, means for shifting said bolt out of said casing into bridging relation between the ends thereof, a cover plate rigidly fixed to the casing for closing the open face of the latter, and a mud guard engaging plate concentric,with the arcuate casing and extending laterally from the inner edge of said cover plate and rigid therewith to fit upon the bicycle mud guard and to be secured thereto.

ERNEST PAULSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 438,526 Butler Oct. 14, 1890 FOREIGN PATENTS Number Country Date 10,415 Great Britain July 5, 1890 40,563 Denmark Aug. 5, 1929 327,058 Italy July 2, 1935 

